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N. PETERS Phuwmlwgnplmn wuhingtm D. C.

UNITED STATES CHRISTIAN H. GOEBEL, OF PHILADELPHIA, PENNSYLVANIA.

PATENT OFFICE'.

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SPECIFICATION forming part of Letters Patent No. 252,310, dated Januaryi7, 1ste.v

Application filed April 22, 1881. (No model.) A

` To all whom it may concern:

Beit known that 1,()HR1sTIAN H. GOEBEL, a citizen of the United States,residing in the city and county of Philadelphia, State oi' Pennsylvania,have invented a new and useful Improvenient in Bolts for Doors,.Windows,Snc., which improvement is fully set forth in the following specicationand accompanying drawings, in which- Figure 1 is a longitudinal verticalsection of the bolt embodying my invention. Fig. 2 isa top or plan viewot' the bolt and casing, the knob being removed. Fig. 3 is a transversesection thereof.

, Similar letters ot" reference indicate corresponding parts in theseveral figures. p My invention relates to bolts adapted to be locked bymeans operated from the knob; and theA nature of said invention consistsin a bolt and its casing, in combination with a rotary Vknob whichshoots and withdraws said bolt,` and afastening device attached to saidknob for locking said knob in either position.

Referring to the drawings, A represents a sliding bolt, which is titledto n casing, B, and

formed on its upper or outer face with a transmversely-extending way orgroove, a.

C represents a knob which, is journaled to the casing'B, and has on itslower or inner end, at or near the circumference thereof, a toe, D,which projects freely into said wa y a, whereby', by the rotationof theknob, the bolt is moved into and out of the keeper.

In the wall of the opening b, on the upper or outer face of the casingB,in which the knob is fitted, are notches c, and in the knob ispiv-`oted a dog, E, the lower'or inner end of which is adapted to dropintoeither ot' the notches c.

Connected tothe upper or outerend of the dog E is a pusher, F, which isguided in a horizontal opening in the knob, and has its head projeetingtherefrom, so as to be conveniently nc cessible,.a spring, d, bearingagainst the knob and pusher, whereby the dog is held in the respectivenotch c, and said pusher assumes its normal position, ready foroperation. When the bolt is withdrawn from the keeper the dog engageswith one of the notches c and holds the knob, and consequently the bolt,so that the latter is not accidentally' moved. lin order to throw outthe bolt .the pusher F is depressed or forced in. This releases the dogfrom the notch, and the knob is then turned, whereby, owing to the toe Dand way a, the bolt is moved and so projected into the keeper. As soonas the dog reaches the notch opposite to the one it first occupies itdrops into the former notch and so locks the knob and bolt, whereby itcannot be returned or opened, unless by proper' operation of the pusherand rotation of the knob. In order to withdraw the bolt it is onlynecessary to depress the pusher and rotate the knob, the bolt thusmoving from the keeper, and when the dog engages with the respectivenotch the knob is secured and the bolt zig-.iin held.

-lt will be noticed that the bolt can bemoved out by rotation ofthe knobeiiher to the rightor left, and moved in by similar motions..

Having thus described my invention, what I claim as new, anddesire tosecure by Letters Patent, is

C. H. GOEBEL.

Witnesses:

JOHN A. WIEDERSHEIM, W. F. Kimi-HER.

